Patents by Inventor Scott L. TeWinkle

Scott L. TeWinkle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8520044
    Abstract: A light emitting diode (LED) print head arranged to receive a set of raw print data. The print head includes a plurality of LED array chips each having a plurality of LEDs, wherein each LED of the plurality of LEDs includes a process direction position. The print head further includes at least one matrix drive circuit arranged to control activation of the plurality of LEDs in response to the set of raw print data and at least one real-time print data compensation circuit, wherein the at least one real-time print data compensation circuit receives the set of raw print data and delays transmitting the set of raw print data to the at least one matrix drive circuit based on a relative relationship between the process direction position of each LED.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: August 27, 2013
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Patent number: 8411182
    Abstract: A photosensor chip, such as used in a hard-copy scanner, reads out image data in repeated cycles. With each cycle an on-board counter counts to a predetermined number and resets to zero. When the clock count reaches certain numbers, integration events are initiated with regard to different subsets of photosensors on the chip. The start and stop times of the integrations within each cycle can thus be adjusted via software instructions.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: April 2, 2013
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Patent number: 8339433
    Abstract: A print head, including: a plurality of chips disposed in a linear array; respective pluralities of first and second matrix drivers on each the chip connected to first and second channels, respectively; and for each chip, first groups of light-emitting diodes (LEDs). Each first group of LEDs includes: a second group of LEDs, with a first number of LEDs, connected to a respective first matrix driver; and a third group of LEDs, with the first number of LEDs, connected to a respective second matrix driver. LEDs in each first group of LEDs are disposed in a staggered arrangement; and the respective pluralities of first and second matrix drivers are for activating in sequence the LEDs in the second and third groups of LEDs, respectively.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: December 25, 2012
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Publication number: 20120314014
    Abstract: A light emitting diode (LED) print head arranged to receive a set of raw print data. The print head includes a plurality of LED array chips each having a plurality of LEDs, wherein each LED of the plurality of LEDs includes a process direction position. The print head further includes at least one matrix drive circuit arranged to control activation of the plurality of LEDs in response to the set of raw print data and at least one real-time print data compensation circuit, wherein the at least one real-time print data compensation circuit receives the set of raw print data and delays transmitting the set of raw print data to the at least one matrix drive circuit based on a relative relationship between the process direction position of each LED.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Applicant: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Patent number: 8300286
    Abstract: A photosensitive chip, including first and second sets of photosensors aligned in a Y direction and separated in a perpendicular X direction and third and fourth sets of photosensors aligned in the Y direction and separated in the X direction. The first and third sets are aligned in the X direction. The second and fourth sets are aligned in the X direction. The first and third sets are offset in the Y direction from the second and fourth sets by a distance about equal to a length of a photosensor divided by the number of sets. A time interval between activation of two sequential photosensors from the first through fourth sets of photosensors is substantially equal to the time period of a scan line for the first through fourth sets of photosensors divided by the number of photosensors in the first through fourth sets of photosensors.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: October 30, 2012
    Assignee: Xerox Corporation
    Inventor: Scott L. TeWinkle
  • Patent number: 8212197
    Abstract: A photosensitive apparatus including a plurality of photosensor chips and a first common line for applying a first external integration signal to each of the plurality of photosensor chips. Each photosensor chip includes a first set of photosensors having an edge pixel and an interior pixel and a control portion for accepting the first external integration signal, the first external integration signal causing an edge pixel integration signal and an interior pixel integration signal for the first set of photosensors. The control portion includes a first signal adjuster effectively altering the first external integration signal to cause the edge pixel integration signal and the interior pixel integration signal for the first set of photosensors.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Patent number: 8212903
    Abstract: A sensor array, including: a plurality of pixels; first and second video lines; and a plurality of intermediate circuits. Each intermediate circuit is electrically connected to a respective pixel from the plurality of pixels and electrically connected to both the first and second video lines. A method for modifying resolution of a sensor array, the array including first and second video lines, a plurality of pixels, and a plurality of intermediate circuits; and, including: electrically connecting each intermediate circuit to a respective pixel and to the first and second video lines; for a first mode, transmitting a signal from a pixel in the plurality of pixels to the first video line via a respective intermediate circuit from the plurality of intermediate circuits; and for a second mode, transmitting a signal from the pixel to the second video line via the respective intermediate circuit from the plurality of intermediate circuits.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: July 3, 2012
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Publication number: 20120069229
    Abstract: An imaging system including at least one video channel having a plurality of imaging chips. Each imaging chip includes a command interpretation unit. The command interpretation unit includes a clock input, a data-in input and a data valid input. The clock input accepts a clock signal, the data-in input accepts a formatted bit sequence and the data valid input selectably causes the data-in input to accept the formatted bit sequence. The formatted bit sequence includes a class code and a function code. The command interpretation unit is adapted to interpret the formatted bit sequence and subsequently to output a control event based on the formatted bit sequence.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 22, 2012
    Applicant: Xerox Corporation
    Inventor: Scott L. TEWINKLE
  • Patent number: 8130420
    Abstract: An imaging system, such as having pixel-sized photosensors for recording images, or light emitters or ink-jet ejectors for creating images, comprises a plurality of chips. Each chip includes a shift register with a shift-register-in line; a set of imaging elements associated with the shift register; and a program line, for accepting a program enable signal enabling acceptance of control data relating to a desired operating parameter of the chip. A control system is operable in a first mode wherein each chip in the plurality of chips receives the program enable signal directly through the program line, and a second mode wherein each chip receives the program enable signal through the shift-register-in line.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: March 6, 2012
    Assignee: Xerox Corporation
    Inventors: Scott L. Tewinkle, Paul A. Hosier
  • Publication number: 20120044317
    Abstract: A print head, including: a plurality of chips disposed in a linear array; respective pluralities of first and second matrix drivers on each the chip connected to first and second channels, respectively; and for each chip, first groups of light-emitting diodes (LEDs). Each first group of LEDs includes: a second group of LEDs, with a first number of LEDs, connected to a respective first matrix driver; and a third group of LEDs, with the first number of LEDs, connected to a respective second matrix driver. LEDs in each first group of LEDs are disposed in a staggered arrangement; and the respective pluralities of first and second matrix drivers are for activating in sequence the LEDs in the second and third groups of LEDs, respectively.
    Type: Application
    Filed: August 18, 2010
    Publication date: February 23, 2012
    Applicant: Xerox Corporation
    Inventor: Scott L. TEWINKLE
  • Patent number: 8013282
    Abstract: An imaging system, such as for recording images as digital data, comprises a plurality of imaging chips. Each chip includes a plurality of imaging elements; a data-in input, the data-in input accepting control data of a first type and control data of a second type, the control data of each type having an effect on at least one operational aspect of the imaging elements; and a selection input, the selection input selectably causing the imaging chip to ignore control data in the data-in input. A data-in line is common to the data-in input of all imaging chips. By controlling the selection input to all chips, the chips can be loaded with control signals in parallel, or in serial, with control data specifically intended for each chip.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: September 6, 2011
    Assignee: Xerox Corporation
    Inventor: Scott L Tewinkle
  • Patent number: 7939788
    Abstract: A photosensitive apparatus, such as a scanner used in a digital copier, includes a plurality of photosensor chips. Each photosensor chip comprises a first set of photosensors, and a control portion for accepting an external integration signal, the signal causing an integration time for the set of photosensors. A signal adjustor is associated with the control portion, and effectively alters the external integration signal to cause the control portion to cause a modified integration time for the first set of photosensors. The system enables adjustments of integration times among chips within an apparatus sharing a common control line.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: May 10, 2011
    Assignee: Xerox Corporation
    Inventor: Scott L Tewinkle
  • Patent number: 7893977
    Abstract: An imaging apparatus includes two subsets of photosensors, the two subsets being interleaved along a linear array. Each photosensor is connectable, by the operation of a shift register, to a reference line and a signal line, to permit double-sampling of signals therefrom. Each subset of photosensors is associated with its own reference line and signal line, and signals from the two subsets of photosensors can be read out largely simultaneously.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: February 22, 2011
    Assignee: Xerox Corporation
    Inventor: Scott L Tewinkle
  • Publication number: 20110025863
    Abstract: A sensor array, including: a plurality of pixels; first and second video lines; and a plurality of intermediate circuits. Each intermediate circuit is electrically connected to a respective pixel from the plurality of pixels and electrically connected to both the first and second video lines. A method for modifying resolution of a sensor array, the array including first and second video lines, a plurality of pixels, and a plurality of intermediate circuits; and, including: electrically connecting each intermediate circuit to a respective pixel and to the first and second video lines; for a first mode, transmitting a signal from a pixel in the plurality of pixels to the first video line via a respective intermediate circuit from the plurality of intermediate circuits; and for a second mode, transmitting a signal from the pixel to the second video line via the respective intermediate circuit from the plurality of intermediate circuits.
    Type: Application
    Filed: July 31, 2009
    Publication date: February 3, 2011
    Applicant: Xerox Corporation
    Inventor: Scott L. TEWINKLE
  • Publication number: 20110002017
    Abstract: A photosensitive chip, including: a plurality of sets of photosensors arranged along an X direction, the photosensors within each set of photosensors aligned in a Y direction, perpendicular to the X direction, and the photosensors within said each set being off-set, in the Y direction, relative to the photosensors of an adjacent set of photosensors by a distance less than a length of a photosensor. In an example embodiment, the plurality of sets of photosensors includes a first number of sets and the distance is about equal to the length of a photosensor divided by the first number.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 6, 2011
    Applicant: Xerox Corporation
    Inventor: Scott L. TeWinkle
  • Publication number: 20110001037
    Abstract: A photosensitive apparatus including a plurality of photosensor chips and a first common line for applying a first external integration signal to each of the plurality of photosensor chips. Each photosensor chip includes a first set of photosensors having an edge pixel and an interior pixel and a control portion for accepting the first external integration signal, the first external integration signal causing an edge pixel integration signal and an interior pixel integration signal for the first set of photosensors. The control portion includes a first signal adjuster effectively altering the first external integration signal to cause the edge pixel integration signal and the interior pixel integration signal for the first set of photosensors.
    Type: Application
    Filed: July 2, 2009
    Publication date: January 6, 2011
    Applicant: Xerox Corporation
    Inventor: Scott L. TEWINKLE
  • Patent number: 7812872
    Abstract: An imaging apparatus, such as used in a digital camera or scanner, includes at least one photosensor chip. Each chip includes one line for conveying a signal causing an integration event of a selected subset of photosensors on the chip, the integration event being one of a starting or ending an integration period for the subset of photosensors. Each chip also includes at least two selection lines, for conveying a multi-bit code identifying the selected subset of photosensors for the integration event.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 12, 2010
    Assignee: Xerox Corporation
    Inventors: Scott L. Tewinkle, Paul A. Hosier
  • Patent number: 7688128
    Abstract: A method of operating an imaging system, the imaging system including a plurality of subsets of imaging elements, such as photosensors, light emitters, or ink-jet ejectors. The imaging elements use a regular clock signal for operation. A provisional clock signal, such as an analog sinusoidal signal, is generated. A subset of imaging elements is selected for operation at a particular time. The provisional clock signal is converted to a regular clock signal for use by the selected subset of imaging elements, incidental to an operational period of the selected subset of imaging elements.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: March 30, 2010
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle
  • Publication number: 20100032549
    Abstract: A photosensitive apparatus, such as a scanner used in a digital copier, includes a plurality of photosensor chips. Each photosensor chip comprises a first set of photosensors, and a control portion for accepting an external integration signal, the signal causing an integration time for the set of photosensors. A signal adjustor is associated with the control portion, and effectively alters the external integration signal to cause the control portion to cause a modified integration time for the first set of photosensors. The system enables adjustments of integration times among chips within an apparatus sharing a common control line.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 11, 2010
    Applicant: XEROX CORPORATION
    Inventor: Scott L. Tewinkle
  • Patent number: 7656448
    Abstract: An imaging apparatus, such as used in a digital camera or scanner, includes at least one photosensor chip. The chip includes subsystems thereon that control the integration periods of the photosensors according to different control data formats. A selector is used to adapt the chip to accept control data of a selected format consistent with a larger apparatus or system.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: February 2, 2010
    Assignee: Xerox Corporation
    Inventor: Scott L. Tewinkle